典型文献
Reduced formation of peroxide and radical species stabilises iron-based hybrid catalysts in polymer electrolyte membrane fuel cells
文献摘要：
The incorporation of Pt into an iron-nitrogen-carbon (FeNC) catalyst for the oxygen reduction reaction(ORR) was recently shown to enhance catalyst stability without Pt directly contributing to the ORR activ-ity.However,the mechanistic origin of this stabilisation remained obscure.It is established herein with rotating ring disc experiments that the side product,H2O2,which is known to damage FeNC catalysts,is suppressed by the presence of Pt.The formation of reactive oxygen species is additionally inhibited,inde-pendent of intrinsic H2O2 formation,as determined by electron paramagnetic resonance.Transmission electron microscopy identifies an oxidised Fe-rich layer covering the Pt particles,thus explaining the inactivity of the latter towards the ORR.These insights develop understanding of FeNC degradation mechanisms during ORR catalysis,and crucially establish the required properties of a precious metal free protective catalyst to improve FeNC stability in acidic media.
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中图分类号：
作者姓名：
Dongyoon Shin;Sabita Bhandari;Marc F.Tesch;Shannon A.Bonke;Frédéric Jaouen;Sonia Chabbra;Christoph Pratsch;Alexander Schnegg;Anna K.Mechler
作者机构：
Max Planck Institute for Chemical Energy Conversion,Stiftstr.34-36,45470 Mülheim an der Ruhr,Germany;ICGM,Univ.Montpellier,CNRS,ENSCM,Montpellier,France;Fritz Haber Institute of the Max Planck Society,Department of Inorganic Chemistry,Faradayweg 4-6,14195 Berlin,Germany
文献出处：
引用格式：
[1]Dongyoon Shin;Sabita Bhandari;Marc F.Tesch;Shannon A.Bonke;Frédéric Jaouen;Sonia Chabbra;Christoph Pratsch;Alexander Schnegg;Anna K.Mechler-.Reduced formation of peroxide and radical species stabilises iron-based hybrid catalysts in polymer electrolyte membrane fuel cells)[J].能源化学,2022(02):433-438
A类：
stabilises,FeNC,oxidised
B类：
Reduced,formation,peroxide,radical,species,iron,hybrid,catalysts,polymer,electrolyte,membrane,fuel,cells,incorporation,Pt,into,nitrogen,carbon,oxygen,reduction,reaction,ORR,was,recently,shown,enhance,stability,without,directly,contributing,However,mechanistic,origin,this,stabilisation,remained,obscure,It,established,herein,rotating,disc,experiments,that,side,product,H2O2,which,known,damage,suppressed,by,presence,reactive,additionally,inhibited,inde,pendent,intrinsic,determined,electron,paramagnetic,resonance,Transmission,microscopy,identifies,rich,layer,covering,particles,thus,explaining,inactivity,latter,towards,These,insights,develop,understanding,degradation,mechanisms,during,catalysis,crucially,required,properties,precious,metal,free,protective,improve,acidic,media
AB值：
0.634835
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